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Discussion :: Testing New

  1. Find the output of the following program.

    void main()
    {
       printf("%d, %d", sizeof(int *), sizeof(int **));
    }
    2. A.

     2, 0
    B.

     0, 2
    C.

     2, 2
    D.

     2, 4
    E.

     4, 4

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    Answer : Option C

    Explanation :

    Every pointer regardless of its type whereas single pointer or pointer to pointer, needs only 2 bytes.

    Size of pointer and int is 2 bytes in Turbo C compiler on windows 32 bit machine. So size of pointer is compiler specific. But generally most of the compilers are implemented to support 4 byte pointer variable in 32 bit and 8 byte pointer variable in 64 bit machine.

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